Dr. Werbel is a transplant infectious diseases clinician-scientist in the Johns Hopkins School of medicine. He completed clinical and research fellowship in infectious diseases at Johns Hopkins, following MD training at the University of Michigan and internal medicine residency and chief residency at the Northwestern Feinberg School of Medicine. He is interested in personalizing protection against opportunistic infections in immunocompromised persons, particularly following solid organ transplantation and among persons with HIV, using a combination of epidemiological and translational approaches; this was the basis for his receiving a K23 career development award (NIAID) as well as PhD in Clinical Investigation from the Bloomberg School of Public Health. He is the Associate Director for Epidemiology and Quantitative Sciences in the Johns Hopkins Transplant Research Center, principal investigator of the Johns Hopkins national prospective cohort study of COVID-19 vaccine responses in the immunocompromised, and a protocol member of the NIH-funded COVID-19 Protection After Transplant Trials for solid organ recipients.